KR101135964B1 - Interior materials for airless tire and tire equipped therewith - Google Patents

Abstract

PURPOSE: An interior material for an airless tire and a tire equipped therewith are provided to enable manufacture according to purpose since the degree of elasticity can be adjusted according to thickness, material, and density. CONSTITUTION: An interior material for an airless tire comprises a concave surface(230), a convex surface(220), and a through-hole(210). The concave surface is concavely formed based on the center of one side. A pair of the concave surfaces is mounted in the tire. The convex surface is convexly formed based on the center of the other side. The through-hole passes through the center of the side. The degree of the elasticity can be changed according to angle and thickness.

Description

Interior materials for airless tire and tire equipped therewith}

The present invention relates to a non-air tire interior material and a tire equipped with the same, and more particularly, to a non-air tire interior material and a tire mounted thereon without the need for air injection for the cushion inside the tire used for small prime movers such as bicycles or motorcycles It is about.

Pneumatic tires are mainly composed of tires used in small-scale prime movers such as bicycles and motorcycles.

Pneumatic tires are equipped with a separate flexible air tube inside the tire to cushion the external shocks, and a low-permeability innerliner to prevent air exposure instead of the air tube. A tubeless tire is used that does not require a separate air tube as a coating on the inside, but the pneumatic tire has a risk of puncture while driving, and especially when the road surface is poor, such as a mountainous terrain. Much higher.

In order to eliminate the risk of puncture, a non-air type tire that does not require air injection has been developed, and a variety of structures have been developed, such as putting a separate elastic interior material into a conventional tire, or an elastic interior material integrated with a tire.

Conventionally, there is a method of manufacturing a polyurethane elastomer by curing liquid polyurethane inside a general-purpose tire, but polyurethane is a relatively expensive material, and when it is filled into the entire tire, a high manufacturing cost is obtained and the weight is high, and the driving effect is increased. There is a problem falling.

Although a separate mold is manufactured and foamed resin such as polyurethane resin is added and foamed to produce a foam-type tire elastic body, foam density is uniform and overall, dense enough to have sufficient buffering effect, and long-term durability is poor. There is this. Korean Patent Registration No. 10-0980836 discloses a tire structure in which the foam density of the tire bottom layer and the middle layer of the tire is differentiated, but the patent also requires a specially manufactured mold and an expensive manufacturing equipment and a manufacturing method thereof. There is a problem that is raised.

Korean Patent Publication No. 1987-0010970 discloses a tire having a flat bottom surface. The tire generally has an open side of the tire and has a rib or spoke structure inside to support and cushion the load. The patent has an advantage in that the tire and the internal elastic interior material are integrated, but the left and right are exposed to the outside, so that mud, sand, gravel, or the like accumulates or gets stuck in the internal space, there is a problem in that driving performance and riding comfort are deteriorated.

Therefore, there is an increasing demand for a non-pneumatic tire interior material and a tire equipped with the same in terms of performance while using inexpensive materials without an additional mold or expensive manufacturing equipment without fear of puncture.

Korea Patent Registration No. 10-0980836 Korean Patent Publication No. 10-1987-0010970

An object of the present invention is to provide a non-pneumatic tire interior material excellent in terms of performance while using a low-cost material without the worry of puncture, and a separate mold or expensive manufacturing equipment.

Another object of the present invention is to provide a non-air tire including the non-air tire interior material.

Non-air tire interior material and a tire equipped with the same according to the present invention for achieving the above object is an elastic body having an outer diameter according to the internal structure of the tire to be mounted, one surface has a concave surface concave concave based on the center of the surface The other surface has a convex surface convexly configured with respect to the center of the surface, and includes a through hole formed through the center of the surface.

In addition, the tire interior material may be mounted in the tire in units of a pair disposed so that the concave surface facing.

In addition, the degree of elasticity of the tire interior material may vary according to a configuration angle or thickness of the concave and convex surfaces.

In addition, it is provided with one surface concave with respect to the center of the surface, the other surface is convexly configured with respect to the center of the surface, the elastic body having a through hole in the center of the surface and arranged to face each other The pair of elastic bodies further includes a tire sheath that is in turn filled in the tire interior space.

In addition, another type of auxiliary elastic body having a different structure from the elastic body may be formed between the pair of elastic bodies.

The non-air tire interior material and the tire equipped with the same according to the present invention have no fear of puncture, and have excellent effects in terms of performance while using inexpensive materials without a separate mold or expensive manufacturing equipment.

In addition, the non-air tire interior material and the tire equipped with the tire according to the present invention do not need the injection of air, and can adjust the degree of elasticity according to the configuration angle and thickness or material and density can be produced according to the application.

1 is a view showing a bicycle tire.
2 is a view showing an elastic body according to the present invention;
Figure 3 is a side view of the elastic body according to the present invention.
4 is a cross-sectional view of an auxiliary elastic body between elastic bodies according to the present invention;
5 is a view illustrating the insertion of a pair of elastic bodies in the tire according to the present invention.
6 is a view showing an elastic body set in the tire according to the present invention.

Examples of the non-pneumatic tire interior material and the tire equipped with the same according to the present invention can be variously applied. Hereinafter, with reference to the accompanying drawings, the most preferred embodiments will be described. Various modifications are possible depending on the requirements and the configuration of the tire, and it is obvious that the invention is not limited to the specific one.

1 is a configuration diagram of a tire for a bicycle, wherein the bicycle tire includes a tire 100, a rim, a spoke, and a boss.

As shown in FIG. 1, the rim 110 is a thin annular portion on the outer periphery of the wheel, which fits the rudder 100 out of the rim 110, and the spokes 120 are around the axle and the wheel. As a radial member connecting the, the flesh of the wheel, the compression force acts mainly between the axle and the bottom of the wheel, the wire spokes (wire spoke) using a thin steel wire of the bicycle is a tension force acts on a line, the boss 130 Is a thick, protruding part of the wheel or shaft joint with sufficient width and flesh thickness provided to reinforce the edge of the hole in which the shaft is fitted.

2 is a view showing an elastic body according to the present invention, and FIG. 3 is a side view of the elastic body.

As shown in Figures 2 to 3, the non-air tire interior material is formed of a plurality of elastic body 200, the elastic body 200 is cut to a predetermined size by drilling a long thin hole in the center of the resin of the long cylinder. In addition, it is preferable to form the cut resin by cutting into a funnel shape, but in addition, the present invention may be formed by various methods including injection.

As shown, one surface of the elastic body 200 has a convex surface 220 configured to be convex with respect to the center of the surface, the other surface has a concave surface 230 configured to be concave relative to the center of the surface, Between the convex surface 220 and the concave surface 230 is disposed an outer circumferential surface 240 for supporting the external pressure formed vertically on the outer surface of the tire.

In addition, a through hole 210, which is a cylindrical hole, is formed across the convex surface 220 and the concave surface 230 of the elastic body 200, and the through hole 210 contracts the elastic body 200 according to the external pressure. In the case of repeated relaxation, the air flows smoothly between the concave surface of the elastic body 200 and the symmetric elastic body 200 ', and the processing convenience of the elastic body 200 can be improved. Of course, the convex surface 220 and the concave surface 230 may be formed in the shape of a smooth funnel, but various configurations such as irregularities, spirals, and polygonal surfaces may be applied to at least one surface.

4 is a view illustrating a configuration of an auxiliary elastic body 250 between an elastic body 200 and a symmetric elastic body 200 ′ according to the present invention, wherein the auxiliary elastic body 250 has a convex surface 220 and a concave surface 230. However, only the through hole 210 and the outer circumferential surface 240 may be formed. Of course, the specific shape, thickness, diameter, etc. of the auxiliary elastic body 250 may be variously modified.

FIG. 5 is a view illustrating insertion of a pair of elastic bodies 300 into a tire according to the present invention, and FIG. 6 is a view of applying a pair of elastic bodies to an interior of a tire.

As shown in FIGS. 5 to 6, the pair of elastic bodies 300 are disposed so that convex portions protrude from both sides of the concave surface of the elastic body 200 and the symmetric elastic body 200 ′, and the pair of elastic bodies ( The subsequent insertion of 300 into the tire can determine the non-pneumatic tire internal pressure and elasticity.

The interior material of a conventional tire is formed of a foam resin in a form corresponding to the tire, so that the tire is separated from the vehicle at high speeds without being supported, and the risk of an accident is very high. However, in the embodiment of the present invention, the tire separated from the rim 110 100) When the pair of elastic bodies 300 are inserted into the inside, the adhesion force increases as the number of elastic bodies 200 increases, so that the width of the pair of elastic bodies d decreases and the height h increases. The internal pressure that can support the external pressure acting on 100) can be maintained. In addition, it is possible to effectively adjust the desired elasticity or support load according to the number of the inserted elastic body can be tailored to meet a variety of targets (general bike, mountain bike, high-speed bike, motorcycle, vehicle, etc.) according to the purpose and purpose.

In addition, since the degree of elasticity varies depending on the configuration angle and thickness of the elastic concave surface 230 and the convex surface 220, the material or the density, etc., it can easily cope with various uses and purposes, and the cost of the interior material can be configured at low cost. In addition to being able to easily apply to a variety of tires can be greatly facilitated to provide a non-pneumatic tire.

100: tire 110: rim
120: spoke 130: boss
200: elastomer 200 ': symmetric elastomer
210: through hole 220: convex surface
230: concave surface 240: outer peripheral surface
250: secondary elastic body 300: a pair of elastic bodies

Claims (5)

An elastic body having an outer diameter according to the internal structure of the tire to be mounted,
A concave surface configured to be concave based on a center of the surface;
The other surface includes a convex surface convexly configured based on the center of the surface; And
It includes a through-hole formed through the center of the face,
Non-air type tire interior material, characterized in that mounted on the inside of the tire in units of a pair disposed so that the concave face.
delete The method according to claim 1,
The non-air type tire interior material
Non-pneumatic tire interior material characterized in that the degree of elasticity varies depending on the angle or thickness of the concave and convex surface.
One surface configured to be concave with respect to the center of the surface;
The other surface configured to be convex with respect to the center of the surface;
An elastic body having a through hole in the center of the surface; And
A tire equipped with a non-air type tire interior material comprising a tire shell in which a pair of elastic bodies arranged to face the one surface are sequentially filled in an internal space.
The method according to claim 4,
A tire equipped with a non-air tire interior material, characterized in that another type of auxiliary elastic body having a different structure from the elastic body is formed between the pair of elastic bodies.

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